By Mayo Clinic Staff. Print. An implantable cardioverter-defibrillator (ICD) â a pager-sized device â is placed in your chest to reduce your risk of dying if the lower chambers of your heart (ventricles) go into a dangerous rhythm and stop beating effectively (cardiac arrest).
Fertilisers contain minerals such as nitrogen, potassium and phosphorus, which help plants to grow. Fertilisers increase crop yields but cause the problem of 'eutrophication' when they're washed by rainwater into rivers and lakes.Most chemical fertilisers are made by the reaction of an acid with an alkali.hey're minerals, which must first dissolve in water so that plants can absorb them through their roots. Fertilisers provide plants with the essential chemical elements needed for growth particularly nitrogen, phosphorus and potassium.
Potassium comes from potassiumsulfate (K 2 SO 4) or potassium chloride (KCl), which is also called muriate of potash.The phosphorus content of a fertilizer is specified as the amount of P 2 O 5 because this is the anhydrousform of phosphoric acid.roteins contain the element nitrogen in addition to carbon, oxygen, and hydrogen.Some proteins contain sulfur as well. Plants also contain DNA, which carries the genetic information that controlshow a plant grows. DNA contains the element phosphorus, in addition to nitrogen, carbon, oxygen, and hydrogen.